Hitler wrote that in his manifest ("Mein Kampf") putting as an example how Ottaman Turks killed Armenians and how nobody cared for that and it proved that he was right when he was killing Jews, homosexuals, gibsys, slaws... it's scarry but true: wars have never been conducted for "humanitarian" reasons, they always have poltical or economical motivations (give me a break about Kuwait for instance, half of the population is still enslaved),